Back and seat cushions for a chair



FIG. 1 is a perspective view showing the top, left side and front of a chair having the back and seat cushions which form my new design, the broken lines of other parts of the chair in this and other figures being for illustrative purposes only and forming no part of my design;

FIG. 2 is a left side elevational view thereof, the ground line in this and other figures being for illustrative purposes only and forming no part of my design;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for back and seat cushions for a chair, as shown and described. 